Lofting a Wing Surface Parametrically
Lofting a Wing Surface Parametrically
(OP)
What would the best way to loft/skin a wing surface where I have leading and trailing edge profile curves and a root foil and tip foil. Would then like to be able to modify the leading/trailing edge profile curves (ie make the foil chord longer or shorter depending on the profile geometry I would like) and have the foil sections scale up or down automatically with each tweak or mod of these profile curves.





RE: Lofting a Wing Surface Parametrically
RE: Lofting a Wing Surface Parametrically
RE: Lofting a Wing Surface Parametrically
RE: Lofting a Wing Surface Parametrically
See attachment for example of what I did.
I want to be able to put this in a power copy so I can reuse this for other projects. Also would like to try this with the blend command, but this might be quiet difficult as the foil profile curve would need to be attached or fixed to the LE & TE guide curves somehow.
RE: Lofting a Wing Surface Parametrically
for example leading edge at 2.5 mm = 6.0 mm
trailing edge at 2.5 mm = 7.0 mm(measuring from the end of it) and we have maximum thickness
chord length = 100 mm for example...
And after that we create spline curve by define point in spline curve and we adjust curvature to smooth it. But I just want to tell you that adjusting chord length is the most difficult thing for me because all curvatures are changed even you adjust length longer or shorter. And we have to adjust curvature to be smooth again,but that is my experience from Solidwork. I'm sure about Catia(it adjust curvature automatically or not). Maybe you wait for anyone which he/she has direct experience,it's better for you..
RE: Lofting a Wing Surface Parametrically
In our case we draw the 3D curve (LE & TE) first and have the foil shape tied to this thru the sweep command. We are not designing the foil section shape; that we do with xfoil or use a standard section.
RE: Lofting a Wing Surface Parametrically
If you want to control the control points of your LE with a circle radius, you should have a lot of serious formula defined in you CATPart.
have fun!
indocti discant et ament meminisse periti
RE: Lofting a Wing Surface Parametrically